Interventional therapy contrast agent injector

Abstract

The utility model belongs to the technical field of pushing injectors, and particularly relates to an interventional therapy contrast agent pushing injector which comprises a pushing injector body, a pushing injection rod is movably installed in the pushing injector body, a limiting plate is fixedly installed on the surface of the pushing injection rod, a plurality of clamping grooves are formed in the top of the limiting plate, and the clamping grooves are matched with the pushing injection rod. A baffle is fixedly installed in the middle of an inner cavity of the injector body, assembling blocks are fixedly installed on the two sides of the top of the baffle, a groove is formed in one side of the top of each assembling block, a positioning rod is fixedly installed in the middle of each groove, and a clamping plate is movably installed on the surface of each positioning rod. Through the structural design of the injection rod, the limiting plate, the clamping groove and the clamping plate, the multi-angle self-locking function is achieved, so that self-locking failure caused by the fact that the self-locking structure is affected by positioning factors can be avoided, then it is ensured that the injection rod can still complete the self-locking action after rotating, the safety and reliability of the self-locking structure are improved, and the service life of the injection rod is prolonged. The problem that a self-locking structure is inconvenient to use is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of pushers, in particular to an interventional therapy contrast agent pusher. Background Art

[0002] Contrast agents (also known as contrast agents) are chemicals injected (or taken) into human tissues or organs to enhance image observation. The density of these products is higher or lower than that of surrounding tissues, and the contrast formed is used to display images with certain instruments. Contrast agents are one of the most commonly used drugs in interventional radiology operations.

[0003] For example, a contrast agent pusher with a publication number of CN211301551U belongs to the field of medical device technology. A contrast agent pusher with an anti-reusable function includes a syringe, a piston is inserted into the inner wall of the syringe, a push rod is inserted into one end of the piston, a handle is fixedly connected to the end of the push rod away from the piston, and a spring cylinder is fixedly connected to the outer surface of the syringe, and a spring is arranged inside the spring cylinder; the utility model, by setting a button, a sliding block, a hole, a spring and a limit block, when the piston reaches the left end of the syringe, that is, when the syringe completes the injection, the spring restores the deformation to allow the limit block to enter the inside of the push rod through the hole, so as to achieve the purpose of jamming the push rod, thereby completing the self-destruction of the contrast agent pusher, preventing the contrast agent pusher from being used twice, avoiding the situation where medical personnel may be stabbed when breaking the push rod for self-destruction, and improving the safety of the contrast agent pusher.

[0004] However, according to the working principle proposed in the above patent, the applicant believes that when the above device is in use, the position of the limit block needs to be completely aligned with the hole before self-locking can be completed, which increases the complexity and time of the operation.

[0005] Therefore, in view of the above problems, an interventional therapy contrast agent injector is proposed. Utility Model Content

[0006] In order to make up for the shortcomings of the prior art and the inconvenience of using the self-locking structure, the utility model provides an interventional therapy contrast agent injector.

[0007] The technical solution adopted by the utility model to solve its technical problems is: an interventional therapy contrast agent pusher, comprising a pusher body, a pusher rod movably installed inside the pusher body, a limit plate fixedly installed on the surface of the pusher rod, a plurality of card slots are provided on the top of the limit plate, a baffle is fixedly installed in the middle part of the inner cavity of the pusher body, assembly blocks are fixedly installed on both sides of the top of the baffle, a groove is provided on one side of the top of the assembly block, a positioning rod is fixedly installed in the middle part of the groove, and a card plate is movably installed on the surface of the positioning rod.

[0008] Preferably, a shaft sleeve is fixedly installed on the top of the back side of the card plate, a connecting block is fixedly installed on the bottom of the back side of the card plate, a telescopic rod is fixedly installed on the back side of the connecting block, a spring is movably installed on the surface of the telescopic rod, and the root of the telescopic rod is fixedly connected to the assembly block.

[0009] Preferably, a through hole is provided in the middle portion of the baffle, and a sealing ring is fixedly installed inside the through hole.

[0010] Preferably, a piston is fixedly mounted on the bottom of the push rod, a handle is fixedly mounted on the top of the push rod, and an anti-slip pad is fixedly mounted on the top of the handle.

[0011] Preferably, assisting plates are fixedly mounted on both sides of the injector body, and finger holes are provided on the front sides of the assisting plates.

[0012] Preferably, a cavity is provided at the top of the inner cavity of the push syringe body, and a liquid storage cavity is provided at the bottom of the inner cavity of the push syringe body.

[0013] Preferably, a connecting tube is fixedly mounted at the middle portion of the bottom of the syringe body, and a transparent window is provided at the bottom of the surface of the syringe body.

[0014] The beneficial effects of the utility model are:

[0015] 1. The utility model realizes the function of multi-angle self-locking through the structural design of the injection rod, the limit plate, the clamping groove and the clamping plate, and through the mutual cooperation between the structures, thereby preventing the self-locking failure caused by the self-locking structure being affected by positioning factors, and further ensuring that the injection rod can still complete the self-locking action after rotation, thereby improving the safety and reliability of the self-locking structure and solving the problem of the inconvenience of using the self-locking structure.

[0016] 2. The utility model realizes the function of positioning the card plate by cooperating with the positioning rod through the structural design of the shaft sleeve, telescopic rod and spring, thereby ensuring that the card plate is in an inclined state, and then facilitating the smoothness of the card plate and the inside of the card slot by cooperating with the chamfer of the bottom of the card slot during later use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 This is a front view structural schematic diagram of the utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the utility model when viewed from above;

[0020] Figure 3 It is an enlarged schematic diagram of the injection rod structure of the utility model;

[0021] Figure 4 It is a schematic diagram of the planar cross-sectional structure of the utility model;

[0022] Figure 5 It is an enlarged schematic diagram of the assembly block structure of the utility model.

[0023] In the figure: 1. injector body; 2. injector rod; 3. limit plate; 4. slot; 5. baffle; 6. assembly block; 7. groove; 8. positioning rod; 9. clamping plate; 10. bushing; 11. connecting block; 12. telescopic rod; 13. spring; 14. through hole; 15. sealing ring; 16. piston; 17. handle; 18. anti-skid pad; 19. power assist plate; 20. finger hole; 21. cavity; 22. liquid storage cavity; 23. connecting tube; 24. transparent window. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] The following is combined with Figure 1-5 To further explain this application in detail,

[0026] The embodiment of the present application discloses an interventional contrast agent injector, comprising an injector body 1, an injector rod 2 movably installed inside the injector body 1, a limit plate 3 fixedly installed on the surface of the injector rod 2, a plurality of card slots 4 are provided on the top of the limit plate 3, a baffle 5 is fixedly installed in the middle part of the inner cavity of the injector body 1, assembly blocks 6 are fixedly installed on both sides of the top of the baffle 5, a groove 7 is provided on one side of the top of the assembly block 6, a positioning rod 8 is fixedly installed in the middle part of the groove 7, and a card plate 9 is movably installed on the surface of the positioning rod 8.

[0027] Reference Figure 1 , Figure 3 , Figure 4 , Figure 5Through the structural design of the injection rod 2, the limit plate 3, the slot 4, and the clamping plate 9, and through the mutual cooperation between the structures, the multi-angle self-locking function is realized, thereby avoiding the self-locking failure caused by the self-locking structure being affected by positioning factors, and thus ensuring that the injection rod 2 can still complete the self-locking action after rotation, thereby improving the safety and reliability of the self-locking structure and solving the problem of the inconvenience of using the self-locking structure.

[0028] A shaft sleeve 10 is fixedly installed on the top of the back side of the card plate 9, a connecting block 11 is fixedly installed on the bottom of the back side of the card plate 9, a telescopic rod 12 is fixedly installed on the back side of the connecting block 11, a spring 13 is movably installed on the surface of the telescopic rod 12, and the root of the telescopic rod 12 is fixedly connected to the assembly block 6.

[0029] Reference Figure 5 Through the structural design of the shaft sleeve 10, the telescopic rod 12, and the spring 13, it is convenient to cooperate with the positioning rod 8 to realize the positioning function of the card plate 9, thereby ensuring that the card plate 9 is in an inclined state, and then it is convenient to cooperate with the chamfer of the bottom of the card slot 4 to ensure the smoothness of the card plate 9 and then the inside of the card slot 4 during later use.

[0030] A through hole 14 is formed in the middle of the baffle 5 , and a sealing ring 15 is fixedly installed inside the through hole 14 .

[0031] Reference Figure 4 By providing the sealing ring 15 , the sealing performance of the connection between the through hole 14 and the injection rod 2 can be increased, thereby preventing external pollutants from entering the liquid storage chamber 22 and preventing the contrast agent from leaking into the cavity 21 .

[0032] A piston 16 is fixedly mounted on the bottom of the push rod 2 , a handle 17 is fixedly mounted on the top of the push rod 2 , and an anti-skid pad 18 is fixedly mounted on the top of the handle 17 .

[0033] Reference Figure 1 and Figure 4 Through the setting of the handle 17, the handheld design makes it easy for the user to apply force to the injection rod 2, so as to accurately control the movement of the injection rod 2. Through the setting of the anti-slip pad 18, it is easy to increase the friction between the user's hand and the handle 17, ensuring that the user can hold the handle 17 more firmly.

[0034] Assisting plates 19 are fixedly mounted on both sides of the injector body 1 , and finger holes 20 are formed on the front of the assisting plates 19 .

[0035] Reference Figure 1 and Figure 2 By providing the power-assisting plate 19 and the finger hole 20, the stability and precision of the user's operation can be improved, thereby ensuring the accuracy and safety of the injection.

[0036] A cavity 21 is provided at the top of the inner cavity of the pusher body 1 , and a liquid storage cavity 22 is provided at the bottom of the inner cavity of the pusher body 1 .

[0037] Reference Figure 4 The provision of the liquid storage chamber 22 facilitates temporary storage of contrast agent.

[0038] A connecting tube 23 is fixedly mounted at the middle portion of the bottom of the pusher body 1 , and a transparent window 24 is provided at the bottom of the surface of the pusher body 1 .

[0039] Reference Figure 1 and Figure 2 The transparent window 24 is provided to facilitate the user to observe the remaining amount of the drug solution and the flow of the drug solution during the injection process, thereby ensuring the correct drug injection.

[0040] Working principle: When using the device, contrast agent is stored in the liquid storage chamber 22. The user holds the handle 17, increases the friction between the hand and the handle 17 through the anti-skid pad 18, applies force to the handle 17, drives the push rod 2 to move through the handle 17, drives the piston 16 to move through the push rod 2, compresses the contrast agent through the piston 16, and releases the contrast agent from the liquid storage chamber 22 through the connecting tube 23. During the injection, the user can observe the remaining amount of the liquid through the transparent window 24. As the piston 16 gradually descends, the limit plate 3 moves synchronously with the piston 16 through the push rod 2. During the descent of the limit plate 3, The bottom of the limit plate 3 is in contact with the card plate 9, and the card plate 9 is in an inclined state through the cooperation of the positioning rod 8, the shaft sleeve 10, the telescopic rod 12, and the spring 13. When the limit plate 3 descends, the chamfer at the bottom of the slot 4 cooperates with the inclination angle of the card plate 9 to gradually apply pressure to the spring 13, and the spring 13 is deformed under pressure, and the telescopic rod 12 is retracted. When the contrast agent is injected, the limit plate 3 is at the bottom of the card plate 9, and the spring 13 releases the tension, pushes the card plate 9 through the connecting block 11, and restores the card plate 9 to the inclined state. The bottom surface of the inclined card plate 9 contacts the top of the limit plate 3 and generates resistance, thereby preventing the injection rod 2 from moving.

[0041] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. An interventional contrast agent injector, characterized in that: The invention comprises a pusher body (1); a pusher rod (2) is movably installed inside the pusher body (1); a limit plate (3) is fixedly installed on the surface of the pusher rod (2); a plurality of clamping grooves (4) are provided on the top of the limit plate (3); a baffle (5) is fixedly installed in the middle part of the inner cavity of the pusher body (1); assembly blocks (6) are fixedly installed on both sides of the top of the baffle (5); a groove (7) is provided on one side of the top of the assembly block (6); a positioning rod (8) is fixedly installed in the middle part of the groove (7); and a clamping plate (9) is movably installed on the surface of the positioning rod (8).

2. The interventional contrast agent injector according to claim 1, characterized in that: A shaft sleeve (10) is fixedly mounted on the top of the back side of the card plate (9), a connecting block (11) is fixedly mounted on the bottom of the back side of the card plate (9), a telescopic rod (12) is fixedly mounted on the back side of the connecting block (11), a spring (13) is movably mounted on the surface of the telescopic rod (12), and the root of the telescopic rod (12) is fixedly connected to the assembly block (6).

3. The interventional contrast agent injector according to claim 1, characterized in that: A through hole (14) is provided in the middle of the baffle (5), and a sealing ring (15) is fixedly installed inside the through hole (14).

4. The interventional contrast agent injector according to claim 1, characterized in that: A piston (16) is fixedly mounted on the bottom of the injection rod (2), a handle (17) is fixedly mounted on the top of the injection rod (2), and an anti-slip pad (18) is fixedly mounted on the top of the handle (17).

5. The interventional contrast agent injector according to claim 1, characterized in that: A boosting plate (19) is fixedly mounted on both sides of the pusher body (1), and a finger hole (20) is provided on the front side of the boosting plate (19).

6. The interventional contrast agent injector according to claim 1, characterized in that: A cavity (21) is arranged at the top of the inner cavity of the push syringe body (1), and a liquid storage cavity (22) is arranged at the bottom of the inner cavity of the push syringe body (1).

7. The interventional contrast agent injector according to claim 1, characterized in that: A connecting tube (23) is fixedly mounted at the middle portion of the bottom of the pusher body (1), and a transparent window (24) is provided at the bottom of the surface of the pusher body (1).

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